Add Build and lint workflow

[StanFromIreland]

Inspired by pl's lint-and-build.yml. Example run: https://github.com/python/python-docs-pl/actions/runs/14550280751 (less the Transifex parts)

Run of this workflow: https://github.com/StanFromIreland/python-docs-ko/actions/runs/14553083085

Note that there are issues in the older Docs (see run above) so it is up to you @flowdas as to what versions you wish to test.

[flowdas]

@corona10 @darjeeling

I see three main issues.
The easiest one is a linting issue, which can be fixed one by one.
The second is that blurb fails in older Docs, which seems to be a version issue of some sort.
The last one seems to be a TeX-related issue (but I'm not sure).

My opinion is to accept the PR.
Then let's fix them one by one.

Thanks @StanFromIreland

[corona10]

lgtm :)

In the future, we may be able to consider to adding preview link at the PR stage

[corona10]

Delegate mering this PR to @flowdas

[StanFromIreland]

@corona10 I’ll send a pr for that after this is merged :-)